In kefir add soda. Melt margarine and pour in the yogurt, add the flour, salt and knead the dough.

Potatoes peel and cut into thin slices.

Divide the dough into two parts. The first roll so that the dough hangs over the edges of forms. Put potatoes, salt, sprinkle with seasoning. On top lay the sliced plate of butter. Roll out second piece of dough and cover the potatoes, combine the edges. In the center make a hole. Bake at 175*C for 45 minutes.

Nice)))